21121544

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{601}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 41610240

約数和(自身を除く): 20488696

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 191, 382, 601, 764, 1202, 1528, 2404, 4393, 4808, 8786, 13823, 17572, 27646, 35144, 55292, 110584, 114791, 229582, 459164, 918328, 2640193, 5280386, 10560772, 21121544]

約数ペア:

[(1, 21121544), (2, 10560772), (4, 5280386), (8, 2640193), (23, 918328), (46, 459164), (92, 229582), (184, 114791), (191, 110584), (382, 55292), (601, 35144), (764, 27646), (1202, 17572), (1528, 13823), (2404, 8786), (4393, 4808)]